I feel like the Kid alliance was big foreshadowing for something like this to happen.
Most yonko crews have a yonko followed by 3 top subordinates. Kid only really has one subordinate that has been highlighted, that being Killer.
If Apoo and Hawkins had joined him, then he would have had 3. Killer, Hawkins, and Apoo.
Ultimately however, Apoo and Hawkins were too untrustworthy. Apoo was a snake whereas Hawkins was a coward
I feel like in Elbaf, Kid will try again to create an alliance. Except this time he will choose supernova that are actually trustworthy: Capone and Urouge, and will ultimately succeed.

Most yonko crews have a yonko followed by 3 top subordinates. Kid only really has one subordinate that has been highlighted, that being Killer.
If Apoo and Hawkins had joined him, then he would have had 3. Killer, Hawkins, and Apoo.
Ultimately however, Apoo and Hawkins were too untrustworthy. Apoo was a snake whereas Hawkins was a coward
I feel like in Elbaf, Kid will try again to create an alliance. Except this time he will choose supernova that are actually trustworthy: Capone and Urouge, and will ultimately succeed.